java appdata,如何在Java的主文件夹（或Windows的appdata文件夹）中获得写权限？

I am trying to save some user settings in the home/appdata folder, but when I use dir.canwrite() it returns false. This is the code I use to determine the home/appdata folder:

public static String getAppDataPath() {

if (System.getProperty("os.name").contains("Windows")) {

return System.getenv("APPDATA");

} else {

return getUnixHome();

}

}

public static String getUnixHome() {

String home = System.getProperty("user.home");

return home != null ? home : "~";

}

And this is the code trying to mkdir:

public static boolean checkExistenceDir(String path) {

File dir = new File(path);

if(!dir.exists()) {

dir.mkdir();

}

}

The path in question is:

getAppDataPath() + ".foo" + File.separatorChar

解决方案

You need the Java process to be started as an Administrator.

Set oShell = CreateObject("Shell.Application")

oShell.ShellExecute "cmd.exe", , , "runas", 1

oShell.Run "java -jar myjar.jar"

To make the program always run as administrator, you need it to run as administrator at least once and update a registry key.